For those of you who have downloaded the Windows Vista Build 5308 February CTP then you might not want to try and install Microsoft Office 12 Beta 1 (also known as Microsoft Office 2007 Beta 1). There are currently some issues between the two pieces of software and Microsoft is working on a fix for Microsoft Office 12. They are expecting to release the Microsoft Office 12 Technical Beta (which will contain the fix for Vista 5308) sometime in March. For those of you that are official testers then you will be able to find the Office 12 download at the BetaPlace (http://beta.microsoft.com). Maybe they will even throw in some other bug fixes :D!
News Source: ActiveWin.com